用QT写一个串口助手软件

好的，下面是一个简单的串口助手软件的示例代码，使用QT编写：

#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtSerialPort/QSerialPort>
#include <QtSerialPort/QSerialPortInfo>
#include <QtWidgets/QTextEdit>
#include <QtWidgets/QLabel>
#include <QtWidgets/QComboBox>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QHBoxLayout>
#include <QtWidgets/QVBoxLayout>

class SerialAssistant : public QMainWindow
{
    Q_OBJECT
public:
    SerialAssistant(QWidget *parent = nullptr)
        : QMainWindow(parent),
          m_serialPort(new QSerialPort(this)),
          m_textEdit(new QTextEdit(this)),
          m_sendData(new QTextEdit(this)),
          m_sendButton(new QPushButton(tr("发送"), this))
    {
        // 初始化串口
        m_serialPort->setBaudRate(QSerialPort::Baud115200);
        m_serialPort->setDataBits(QSerialPort::Data8);
        m_serialPort->setParity(QSerialPort::NoParity);
        m_serialPort->setStopBits(QSerialPort::OneStop);
        m_serialPort->setFlowControl(QSerialPort::NoFlowControl);

        // 创建界面
        QWidget *centralWidget = new QWidget(this);
        setCentralWidget(centralWidget);

        QVBoxLayout *vLayout = new QVBoxLayout(centralWidget);
        QHBoxLayout *hLayout = new QHBoxLayout();
        vLayout->addLayout(hLayout);
        vLayout->addWidget(m_textEdit);
        vLayout->addWidget(m_sendData);
        vLayout->addWidget(m_sendButton);

        QLabel *portLabel = new QLabel(tr("串口："), this);
        hLayout->addWidget(portLabel);
        m_portComboBox = new QComboBox(this);
        hLayout->addWidget(m_portComboBox);
        QLabel *baudRateLabel = new QLabel(tr("波特率："), this);
        hLayout->addWidget(baudRateLabel);
        m_baudRateComboBox = new QComboBox(this);
        hLayout->addWidget(m_baudRateComboBox);
        QLabel *dataBitsLabel = new QLabel(tr("数据位："), this);
        hLayout->addWidget(dataBitsLabel);
        m_dataBitsComboBox = new QComboBox(this);
        hLayout->addWidget(m_dataBitsComboBox);
        QLabel *parityLabel = new QLabel(tr("校验位："), this);
        hLayout->addWidget(parityLabel);
        m_parityComboBox = new QComboBox(this);
        hLayout->addWidget(m_parityComboBox);
        QLabel *stopBitsLabel = new QLabel(tr("停止位："), this);
        hLayout->addWidget(stopBitsLabel);
        m_stopBitsComboBox = new QComboBox(this);
        hLayout->addWidget(m_stopBitsComboBox);

        // 设置串口参数选项
        foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
            m_portComboBox->addItem(info.portName());
        }
        QStringList baudRates = QStringList() << "1200" << "2400" << "4800" << "9600"
                                               << "14400" << "19200" << "38400" << "57600" << "115200";
        m_baudRateComboBox->addItems(baudRates);
        QStringList dataBits = QStringList() << "5" << "6" << "7" << "8";
        m_dataBitsComboBox->addItems(dataBits);
        QStringList paritys = QStringList() << "None" << "Odd" << "Even";
        m_parityComboBox->addItems(paritys);
        QStringList stopBits = QStringList() << "1" << "1.5" << "2";
        m_stopBitsComboBox->addItems(stopBits);

        // 信号槽连接
        connect(m_sendButton, &QPushButton::clicked, this, &SerialAssistant::sendData);
        connect(m_serialPort, &QSerialPort::readyRead, this, &SerialAssistant::readData);
        connect(m_portComboBox, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentTextChanged),
                this, &SerialAssistant::updatePort);
        connect(m_baudRateComboBox, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentTextChanged),
                this, &SerialAssistant::updateBaudRate);
        connect(m_dataBitsComboBox, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentTextChanged),
                this, &SerialAssistant::updateDataBits);
        connect(m_parityComboBox, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentTextChanged),
                this, &SerialAssistant::updateParity);
        connect(m_stopBitsComboBox, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentTextChanged),
                this, &SerialAssistant::updateStopBits);
    }

private slots:
    void updatePort(const QString &portName)
    {
        m_serialPort->setPortName(portName);
    }

    void updateBaudRate(const QString &baudRate)
    {
        m_serialPort->setBaudRate(baudRate.toInt());
    }

    void updateDataBits(const QString &dataBits)
    {
        m_serialPort->setDataBits(static_cast<QSerialPort::DataBits>(dataBits.toInt()));
    }

    void updateParity(const QString &parity)
    {
        if (parity == "None") {
            m_serialPort->setParity(QSerialPort::NoParity);
        } else if (parity == "Odd") {
            m_serialPort->setParity(QSerialPort::OddParity);
        } else if (parity == "Even") {
            m_serialPort->setParity(QSerialPort::EvenParity);
        }
    }

    void updateStopBits(const QString &stopBits)
    {
        if (stopBits == "1") {
            m_serialPort->setStopBits(QSerialPort::OneStop);
        } else if (stopBits == "1.5") {
            m_serialPort->setStopBits(QSerialPort::OneAndHalfStop);
        } else if (stopBits == "2") {
            m_serialPort->setStopBits(QSerialPort::TwoStop);
        }
    }

    void sendData()
    {
        QByteArray data = m_sendData->toPlainText().toUtf8();
        m_serialPort->write(data);
    }

    void readData()
    {
        QByteArray data = m_serialPort->readAll();
        m_textEdit->append(QString::fromUtf8(data));
    }

private:
    QSerialPort *m_serialPort;
    QTextEdit *m_textEdit;
    QTextEdit *m_sendData;
    QPushButton *m_sendButton;
    QComboBox *m_portComboBox;
    QComboBox *m_baudRateComboBox;
    QComboBox *m_dataBitsComboBox;
    QComboBox *m_parityComboBox;
    QComboBox *m_stopBitsComboBox;
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    SerialAssistant assistant;
    assistant.show();

    return app.exec();
}

#include "main.moc"

这个串口助手软件包含以下功能：

- 显示接收到的串口数据
- 发送指定数据到串口
- 串口参数设置

你可以根据自己的需求对代码进行修改和扩展。